diff --git a/Gemfile.lock b/Gemfile.lock
index 6a266f5..521f854 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,11 +10,11 @@ GEM
     ast (2.4.0)
     bindata (2.4.4)
     diff-lcs (1.3)
-    docile (1.3.1)
+    docile (1.3.2)
     elftools (1.1.0)
       bindata (~> 2)
     jaro_winkler (1.5.3)
-    json (2.1.0)
+    json (2.2.0)
     parallel (1.17.0)
     parser (2.6.3.0)
       ast (~> 2.4.0)
@@ -41,7 +41,7 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.7)
     ruby-progressbar (1.10.1)
-    simplecov (0.16.1)
+    simplecov (0.17.0)
       docile (~> 1.1)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
@@ -57,7 +57,7 @@ DEPENDENCIES
   rake (~> 12.3)
   rspec (~> 3.7)
   rubocop (~> 0.59)
-  simplecov (~> 0.16.1)
+  simplecov (~> 0.17.0)
   yard (~> 0.9)
 
 BUNDLED WITH
diff --git a/one_gadget.gemspec b/one_gadget.gemspec
index d0f3c92..68343c0 100644
--- a/one_gadget.gemspec
+++ b/one_gadget.gemspec
@@ -38,6 +38,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rake', '~> 12.3'
   s.add_development_dependency 'rspec', '~> 3.7'
   s.add_development_dependency 'rubocop', '~> 0.59'
-  s.add_development_dependency 'simplecov', '~> 0.16.1'
+  s.add_development_dependency 'simplecov', '~> 0.17.0'
   s.add_development_dependency 'yard', '~> 0.9'
 end